Ch.7 - Quantum MechanicsWorksheetSee all chapters
All Chapters
Ch.1 - Intro to General Chemistry
Ch.2 - Atoms & Elements
Ch.3 - Chemical Reactions
BONUS: Lab Techniques and Procedures
BONUS: Mathematical Operations and Functions
Ch.4 - Chemical Quantities & Aqueous Reactions
Ch.5 - Gases
Ch.6 - Thermochemistry
Ch.7 - Quantum Mechanics
Ch.8 - Periodic Properties of the Elements
Ch.9 - Bonding & Molecular Structure
Ch.10 - Molecular Shapes & Valence Bond Theory
Ch.11 - Liquids, Solids & Intermolecular Forces
Ch.12 - Solutions
Ch.13 - Chemical Kinetics
Ch.14 - Chemical Equilibrium
Ch.15 - Acid and Base Equilibrium
Ch.16 - Aqueous Equilibrium
Ch. 17 - Chemical Thermodynamics
Ch.18 - Electrochemistry
Ch.19 - Nuclear Chemistry
Ch.20 - Organic Chemistry
Ch.22 - Chemistry of the Nonmetals
Ch.23 - Transition Metals and Coordination Compounds
Sections
Wavelength and Frequency
Speed of Light
The Energy of Light
Electromagnetic Spectrum
Photoelectric Effect
De Broglie Wavelength
Heisenberg Uncertainty Principle
Bohr Model
Emission Spectrum
Bohr Equation
Introduction to Quantum Mechanics
Quantum Numbers: Principal Quantum Number
Quantum Numbers: Angular Momentum Quantum Number
Quantum Numbers: Magnetic Quantum Number
Quantum Numbers: Spin Quantum Number
Quantum Numbers: Number of Electrons
Quantum Numbers: Nodes
Additional Practice
Diffraction vs Refraction
Quantum Numbers: Emission Spectrum
Dimensional Boxes
GuideLearnAdditional PracticeSummary
Next SectionPhotoelectric Effect

The Electromagnetic Spectrum is the different forms of radioactive energy that exists in our universe.

Electromagnetic Spectrum

Concept #1: The Electromagnetic Spectrum

Example #1: Which kind of electromagnetic radiation contains the greatest amount of energy per atom?

Concept #2: Visible Light Spectrum

Practice: Which of the following sources of electromagnetic radiation will have the highest frequency?

Practice: A carbon–oxygen double bond within a sugar molecule absorbs electromagnetic radiation at a frequency of 6.0 x 1012 s-1. What portion of the electromagnetic spectrum does this represent?

Practice: X-Ray detectors are devices that use scintillators to convert X-rays into light in order to detect X-Rays indirectly. Which of the following would be picked up by an X-Ray detector: radiation with a wavelength of 0.85 nm or a frequency of 6.52 x 1011 s-1?

Previous SectionThe Energy of Light
Next SectionPhotoelectric Effect
Additional Problems
On the electromagnetic spectrum, visible light is immediately between two other wavelength regions. Name them. A. Microwave and infrared B. Ultraviolet and x-ray C. X-ray and gamma ray D. Radio and microwave E. Ultraviolet and infrared
What is the correct order of decreasing energy? 1. microwaves, visible light, x-rays, γ-rays, ultraviolet light 2. visible light, microwaves, x-rays, γ-rays, ultraviolet light 3. visible light, ultraviolet light, microwaves, , x-rays, γ-rays 4. microwaves, visible light, ultraviolet light, x-rays, γ-rays, 5. γ-rays, x-rays, ultraviolet light, visible light, microwaves 
Which is the best description of the color of an object with the following absorption spectrum?
You have measured the energy of a photon that you captured in a specialized detector, and found that the photon had an energy of 6.89 × 10 −24 J. Based on the scale below, what type of photon was detected? (a) Gamma(γ) ray (b) X ray (c) Ultraviolet (UV)/Visible (d) Infrared (IR) (e) Microwave                
Place the following types of electromagnetic radiation in order of increasing wavelength. a) X-Ray b) Gamma Rays c) Radio d) Visible light 1 at (4.45 x 10 –9 J) e) Visible Light 2 at (3.56 x 10 –17 m)
What is the correct order of increasing energy? 1. microwaves, x-rays, γ-rays, visible light, ultraviolet light 2. microwaves, ultraviolet light, visible light, x-rays, γ-rays 3. ultraviolet light, visible light, microwaves, x-rays, γ-rays 4. x-rays, γ-rays, microwaves, visible light, ultraviolet light 5. microwaves, visible light, ultraviolet light, x-rays, γ-rays
Which color in the rainbow has the shortest wavelength?  1. blue 2. green 3. red 4. yellow 5. orange
What kind of radiation causes molecules to vibrate? 1. ultraviolet 2. x-rays 3. visible 4. infrared 5. microwave
Which color in the rainbow has the shortest wavelength?1. blue2. green3. red4. yellow5. orange
Arrange the following spectral regions in order of increasing wavelength:infrared, microwave, ultraviolet, visible.A) ultraviolet < visible < infrared < microwaveB) microwave < visible < infrared < ultravioletC) ultraviolet < infrared < visible < microwaveD) microwave < infrared < visible < ultraviolet
What is the energy, in joules, of a mole of photons associated with visible light of wavelength 486 nm? A) 2.46 × 10–4 J B) 6.46 × 10–25 J C) 246 kJ D) 6.46 × 10–16 J E) 12.4 kJ
Determine which of the following statements are false, and correct them. (a) Electromagnetic radiation is incapable of passing through water. (b) Electromagnetic radiation travels through a vacuum at a constant speed, regardless of wavelength. (c) Infrared light has higher frequencies than visible light. (d) The glow from a fireplace, the energy within a microwave oven, and a foghorn blast are all forms of electromagnetic radiation. 
Label each of the following statements as true or false. For those that are false, correct the statement. (a) Visible light is a form of electromagnetic radiation.
Label each of the following statements as true or false. For those that are false, correct the statement. (b) Ultraviolet light has longer wavelengths than visible light.
Label each of the following statements as true or false. For those that are false, correct the statement. (c) X-rays travel faster than microwaves.
Label each of the following statements as true or false. For those that are false, correct the statement. (d) Electromagnetic radiation and sound waves travel at the same speed. 
Arrange the following kinds of electromagnetic radiation in order of increasing wavelength: infrared, green light, red light, radio waves, X-rays, ultraviolet light.
(c) Would the radiations in part (a) or part (b) be detected by an X-ray detector?
If you put 120 volts of electricity through a pickle, the pickle will smoke and start glowing an orange-yellow color. The light is emitted because the sodium ions in the pickle become excited; their return to the ground state results in light emission (see Figure 6.13b and Sample Exercise 6.3). (c) Calculate the energy gap between the excited and ground states for the sodium ion.
If you put 120 volts of electricity through a pickle, the pickle will smoke and start glowing an orange-yellow color. The light is emitted because the sodium ions in the pickle become excited; their return to the ground state results in light emission (see Figure 6.13b and Sample Exercise 6.3). (d) If you soaked the pickle for a long time in a different salt solution, such as strontium chloride, would you still observe 589 nm light emission? Why or why not?
The energy from radiation can be used to cause the rupture of chemical bonds. A minimum energy of 941 kJ/mol is required to break the nitrogen–nitrogen bond in N2. What is the longest wavelength of radiation that possesses the necessary energy to break the bond? What type of electromagnetic radiation is this?
A diode laser emits at a wavelength of 987 nm. (a) In what portion of the electromagnetic spectrum is this radiation found? (b) All of its output energy is absorbed in a detector that measures a total energy of 0.52 J over a period of 32 s. How many photons per second are being emitted by the laser?
A stellar object is emitting radiation at 3.55 mm. (a) What type of electromagnetic spectrum is this radiation? (b) If a detector is capturing ' tabindex="0">3.2×108 photons per second at this wavelength, what is the total energy of the photons detected in one hour?
One of the emission lines of the hydrogen atom has a wavelength of 93.8 nm. (a) In what region of the electromagnetic spectrum is this emission found?
Place the following types of electromagnetic radiation in order of decreasing energy: Ultraviolet light, Radio waves, Microwaves A. Radio waves > Microwaves > Ultraviolet light B. Ultraviolet light > Microwaves > Radio waves C. Radio waves > Ultraviolet light > Microwaves D. Ultraviolet light > Radio waves > Microwaves E. Microwaves > Radio waves > Ultraviolet light
In the electromagnetic spectrum UV (ultraviolet) light is to the left and IR (infrared) light to the right of visible light. Which of the following statements is/are correct?(1) UV light has lower wavelengths.(2) IR light has lower frequencies.(3) IR light has lower energiesa. (1) and (2)b. (1) and (3)c. (2) and (3)d. only one of these (1 or 2 or 3)e. All three (1 and 2 and 3)
Which one of the following types of radiation has the shortest wavelength, the greatest energy AND the highest frequency?A. ultraviolet radiationB. infrared radiationC. visible red lightD. visible blue lightE. none because short wavelength is associated with low energy and low frequency, not high energy and high frequency
Identify the color that has a wavelength of 535 nm.a. blueb. yellowc. redd. green
What is the correct order of decreasing energy?1. microwaves, visible light, x-rays, γ-rays. ultraviolet light2. visible light, microwaves, x-rays, γ-rays, ultraviolet light3. visible light, ultraviolet light, microwaves, x-rays, γ-rays4. microwaves, visible light, ultraviolet light, x-rays, γ-rays5. γ-rays, x-rays, ultraviolet light, visible light, microwaves
Rank the following kinds of electromagnetic radiation in order of decreasing wavelength?Red Light, Radio Waves, Microwaves, Infrared Light, Ultraviolet Light, X-rays, Gamma Rays, Violet Light
Of the following, ______________ radiation has the longest wavelength and _____________ radiation has the greatest energy.                              infrared                  gamma               visiblea) infrared, gammab) gamma, infraredc) visible, gammad) infrared, visiblee) visible, infrared